import type { IntlShape } from 'react-intl';
/**
 * Resolves the static `separatorDash` message via `intl.formatMessage`
 * the first time it is requested for a given `intl` instance, and
 * returns the cached string on every subsequent call.
 *
 * In shared-tooltip mode this helper is hit O(rows) times per
 * mouse-move render; the underlying `formatMessage` call walks
 * formatjs's `deepMergeFormatsAndSetTimeZone` path, which dominated
 * the recorded profile when invoked uncached.
 */
export declare function getCachedSeparator(intl: IntlShape): string;